Lock for car-doors.



F. SNYDER.

LOOK FOR CAR DOORS.

APPLICATION FILED NOV. 9, 1911.

Patented Mar. 19, 1912..

f /7 Z r a? WITNESSES [NVENTOR/ OLUMRIA PLANOGRAP" 50-. WASHINGTON, D.C.

FRANK SNYDER, OF COUNCIL BLUFFS, IOWA.

LOOK FOR CAR-DOORS.

Application filed. November 9, 1911.

Specification of Letters Patent.

Patented Mar. 19, 1912.

Serial No. 659,315.

To all whom it may concern:

Be it known that I, FRANK SNYDER, a citizen of the United States ofAmerica, and resident of Council Bluffs, in the county of Pottawattamieand State of Iowa, have in vented certain new and useful Improvements inLocks for Car-Doors, of which the following is a specification.

This invention relates to looks for car doors, the same beingparticularly adapted for use on doors of grain cars where seals areusually employed to guard against opening of the said doors byunauthorized persons. I

An object of this invention is to provide novel means associated with acar door whereby the door may be locked in closed position and dulysealed, the object of the invention being primarily to so arrange thearts that upon closing the door, the parts of the lock are in operativeposition and a locking bolt may be operated to retain the said lock inits closed position, the bolt being provided with a seal receiving slotwhich will prevent opening of the door without detection.

With the foregoing and other objects in View, the invention consists inthe details of construction and in the arrangement and combination ofparts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to theaccompanying drawings forming part of this specification wherein likecharacters denote corresponding parts in the several views, and inwhich- Figure 1 illustrates a view in elevation of a fragment of a doorand car body with the invention applied thereto; Fig. 2 illustrates alongitudinal sectional view of the locking members; and Fig. 3illustrates a sectional view on the line 3-3 of Fig. 1 with the fragmentof the door and car body omitted.

In these drawings l denotes a plate adapted to be secured to a car body,the said plate having ears 5 apertured to receive a retaining bolt 6,the said bolt having an eye 7 in its upper end designed for thereception of a chain or other flexible connection which will prevent itsdislodgment from a car body. One of the ears, that is to say, the upperear is provided with a screw 8 which extends into the aperture of thesaid car.

A plate 9 is secured to a car door, the said plate having lugs 10provided with shoulders 1.1 which are adapted to pass beyond thevertical plane of the bolt (3, so that as the bolt 6 is seated in theapertures of the several ears 5, it will serve to engage the shoulders11 of the lugs 10 and prevent movement of the door. The lower end of thebolt 6 is shown as having a shoulder 12 thereon, which is designed to beengaged by the inner end of the screw 8 to control the limit of upwardmovement of the said bolt. The bolt is further provided with a slot 13adapted to receive a wire'l-t of a seal 15 such as is now commonlyemployed on freight cars. The plate l at points between the ears 5--5 isbeveled as shown at 16 forming camming surfaces to guide the lugs 10over the surface of the plate so that the lugs will be in positionsbetween the ears for the purpose heretofore stated.

It has been found that locks for car doors made in accordance with thisinvention are strong and durable and are conveniently operated owing tothe fact that the bolt falls by gravity into the openings formed in theears 5. One side of the bolt 6 is preferably flattened as shown at 17,the said flattened surface of the bolt resulting in the formation of theshoulder 12, the purpose of which has already been stated.

I claim" In a sliding door lock, a plate, having apertured ears formedthereon, a bolt adapted to slide in the apertures of said ears andbeveled surfaces between the ears and adjacent to the edge of theplat-e; a plate having shouldered lugs formed thereon said lugs adaptedto lie between said ears in frictional engagement with said cammingsurfaces and engage said bolt.

In testimony whereof, I ailix my signature in the presence of twowitnesses.

FRANK SNYDER.

\Vitnesses SARAH C. LARsnN, JOHN S. 'ENGELKE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

